Which William H. Armstrong novel about a coon dog in the Deep South won the 1970 Newbery Medal?

Which 1970 hit's title could describe a "structure spanning agitated H2O"? T. Harry Williams won a 1970 Pulitzer Prize for his biography of which Louisiana "Kingfish"? Complete the title of Ursula K. Le Guin's novel: "The Left Hand of ___". "(They Long to Be) Close to You" was a 1970 hit for which brother-sister duo? "We've Only Just Begun" (1970) and "Calling Occupants of Interplanetary Craft" (1977) were recorded by which duo? Which 1970 film begins "What can you say about a twenty-five-year-old girl who died?" Who had his breakthrough in 1970 with "Your Song"? Which Helen Reddy song reached No. 1 in 1973?